Patents by Inventor Claude Dufresne

Claude Dufresne has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7144913
    Abstract: Dihydropyrroloindoles and tetrahydropyridoindoles are prostaglandin receptor antagonists useful for the treatment of prostaglandin-mediated diseases such as allergic rhinitis, nasal congestion and asthma.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: December 5, 2006
    Assignee: Merck Frosst Canada & Co.
    Inventors: Zhaoyin Wang, Christian Beaulieu, Claude Dufresne, Daniel Guay, Yves LeBlanc
  • Publication number: 20050272756
    Abstract: Pyridopyrrolizine and pyridoindolizine derivatives are prostaglandin receptor antagonists useful for the treatment of prostaglandin-mediated diseases such as allergic rhinitis, nasal congestion and asthma.
    Type: Application
    Filed: October 28, 2003
    Publication date: December 8, 2005
    Inventors: Yves Leblanc, Claude Dufresne, Patrick Roy
  • Publication number: 20050261245
    Abstract: The invention encompasses novel compounds of Formula I, which are nitric oxide-releasing prodrugs of diaryl-2-(5H) furanones useful in the treatment of cyclooxygenase-2 mediated diseases. The invention also encompasses certain pharmaceutical compositions and methods for treatment of cyclooxygenase-2 mediated diseases comprising the use of compounds of Formula I. The above compounds may be used as a combination therapy with low-dose aspirin to treat chronic cyclooxygenase-2 mediated diseases or conditions while simultaneously reducing the risk of thrombotic cardiovascular events.
    Type: Application
    Filed: July 24, 2003
    Publication date: November 24, 2005
    Inventors: Carl Berthelette, Nicholas Lachance, Lianhai Li, Claudio Sturino, Zhaoyin Wang, Robert Young, Claude Dufresne
  • Publication number: 20040180934
    Abstract: Dihydropyrroloindoles and tetrahydropyridoindoles are prostaglandin receptor antagonists useful for the treatment of prostaglandin-mediated diseases such as allergic rhinitis, nasal congestion and asthma.
    Type: Application
    Filed: October 15, 2003
    Publication date: September 16, 2004
    Inventors: Zhaoyin Wang, Christian Beaulieu, Claude Dufresne, Daniel Guay, Yves LeBlanc
  • Publication number: 20040176330
    Abstract: The invention encompasses the novel class of compounds represented by the formula below, which are inhibitors of the PTP-1B enzyme.
    Type: Application
    Filed: December 18, 2003
    Publication date: September 9, 2004
    Inventors: Claude Dufresne, Yves Leblanc, Cheuk K. Lau, Patrick Roy, Chun Sing li
  • Patent number: 6777433
    Abstract: The invention encompasses the novel class of compounds represented by formula I, which are inhibitors of the PTP-1B enzyme. The invention also encompasses pharmaceutical compositions and methods of treating or preventing PTP-1B mediated diseases, including diabetes, obesity, and diabetes-related diseases.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: August 17, 2004
    Assignee: Merck Frosst Canada & Co.
    Inventors: Yves Leblanc, Claude Dufresne, Jacques Yves Gauthier, Robert Young
  • Patent number: 6583126
    Abstract: The invention encompasses the novel class of compounds represented by formula I which are inhibitors of the PTP-1B enzyme. The invention also encompasses pharmaceutical compositions and methods of treating or preventing PTP-1B mediated diseases, including diabetes, obesity, and diabetes-related diseases.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: June 24, 2003
    Assignee: Merck Erosst Canada & Co.
    Inventors: Yves Leblanc, Claude Dufresne, Scheigetz John, Cheuk Kun Lau, Chun Sing Li, Patrick Roy, Michael Boyd, Zhaoyin Wang
  • Publication number: 20030114703
    Abstract: The invention encompasses the novel class of compounds represented by formula I, which are inhibitors of the PTP-1B enzyme.
    Type: Application
    Filed: June 28, 2002
    Publication date: June 19, 2003
    Inventors: Yves Leblanc, Claude Dufresne, Jacques Yves Gauthier, Robert Young
  • Patent number: 6498151
    Abstract: The invention encompasses the novel class of compounds represented by the formula below, which are inhibitors of the PTP-1B enzyme. The invention also encompasses pharmaceutical compositions and methods of treating or preventing PTP-1B mediated diseases, including diabetes.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: December 24, 2002
    Assignee: Merck Frosst Canada & Co.
    Inventors: Chun Sing Li, Christopher Bayly, Jacques Yves Gauthier, Yves Leblanc, Cheuk Kun Lau, Patrick Roy, Michel Therien, Zhaoyin Wang, Claude Dufresne, Rejean Fortin
  • Patent number: 6486142
    Abstract: The invention encompasses the novel class of compounds represented by formula I, which are inhibitors of the PTP-1B enzyme. The invention also encompasses pharmaceutical compositions and methods of treating or preventing PTP-1B mediated diseases, including diabetes, obesity, and conditions related to diabetes.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: November 26, 2002
    Assignee: Merck Frosst Canada & Co.
    Inventors: Yves Leblanc, Claude Dufresne, Jacques Yves Gauthier, Cheuk Kun Lau, Chun Sing Li, Patrick Roy, Michel Therien, John Scheigetz, Zhaoyin Wang
  • Patent number: 6448429
    Abstract: The invention encompasses the novel class of compounds represented by formula I, which are inhibitors of the PTP-1B enzyme. The invention also encompasses pharmaceutical compositions and methods of treating or preventing PTP-1B mediated diseases, including diabetes, obesity, and diabetes-related diseases.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: September 10, 2002
    Assignee: Merck Frosst Canada & Co.
    Inventors: Yves Leblanc, Claude Dufresne, Jacques Yves Gauthier, Robert Young
  • Publication number: 20020091104
    Abstract: The invention encompasses the novel class of compounds represented by the formula below, which are inhibitors of the PTP-1B enzyme.
    Type: Application
    Filed: March 21, 2001
    Publication date: July 11, 2002
    Inventors: Chung Sing Li, Christopher Bayly, Jacques Yves Gauthier, Yves Leblanc, Cheuk Kun Lau, Patrick Roy, Michel Therien, Zhaoyin Wang, Claude Dufresne, Rejean Fortin
  • Publication number: 20020058644
    Abstract: The invention encompasses the novel class of compounds represented by formula I, which are inhibitors of the PTP-1B enzyme.
    Type: Application
    Filed: December 21, 2000
    Publication date: May 16, 2002
    Inventors: Yves Leblanc, Claude Dufresne, Jacques Yves Gauthier, Cheuk Kun Lau, Chun Sing Li, Patrick Roy, Michel Therien, John Scheigetz, Zhaoyin Wang
  • Publication number: 20020052344
    Abstract: The invention encompasses the novel class of compounds represented by formula I which are inhibitors of the PTP-1B enzyme.
    Type: Application
    Filed: December 21, 2000
    Publication date: May 2, 2002
    Inventors: Yves Leblanc, Claude Dufresne, Scheigetz John, Cheuk Kun Lau, Chun Sing Li, Patrick Roy, Michael Boyd, Zhaoyin Wang
  • Publication number: 20020052347
    Abstract: The invention encompasses the novel class of compounds represented by formula I, which are inhibitors of the PTP-1B enzyme.
    Type: Application
    Filed: December 21, 2000
    Publication date: May 2, 2002
    Inventors: Yves Leblanc, Claude Dufresne, Jacques Yves Gauthier, Robert Young
  • Patent number: 6365592
    Abstract: The invention encompasses compounds represented by formula I: as well as compositions and methods of treatment. The compounds are inhibitors of the PTP-1B enzyme.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: April 2, 2002
    Assignee: Merck Frosst Canada & Co.
    Inventors: Yves Leblanc, Claude Dufresne, Patrick Roy, Zhaoyin Wang
  • Patent number: 6348572
    Abstract: Disclosed are new ligands for use in a binding assay for proteases and phosphatases, which contain cysteine in their binding sites or as a necessary structural component for enzymatic binding. The sulfhydryl group of cysteine is the nucleophilic group in the enzyme's mechanistic proteolytic and hydrolytic properties. The assay can be used to determine the ability of new, unknown ligands and mixtures of compounds to competitively bind with the enzyme versus a known binding agent for the enzyme, e.g., a known enzyme inhibitor. By the use of a mutant form of the natural or native wild-type enzyme, in which serine, or another amino acid, e.g., alanine, replaces cysteine, the problem of interference from extraneous oxidizing and alkylating agents in the assay procedure is overcome. The interference arises because of oxidation or alkylation of the sulfhydryl, —SH (or —S−), in the cysteine, which then adversely affects the binding ability of the enzyme.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: February 19, 2002
    Assignee: Merck Frosst Canada & Co.
    Inventors: Sylvie Desmarais, Robert Zamboni, Richard Friesen, Yves LeBlanc, Claude Dufresne, Robert N. Young, Patrick Roy
  • Publication number: 20010006336
    Abstract: A battery charger for a cellular phone, having a speaker includes an ear jack connected to an ear jack of the cellular phone, for transmitting a voice signal of the cellular phone to the battery charger, a voice amplifier for amplifying the voice signal from the ear jack, and a speaker for converting the voice signal output from the voice amplifier into voice. The battery charger for a cellular phone, having a speaker further includes a communication port connected to a communication port of the cellular phone when the cellular phone is inserted(connected) to the battery charger, for mutually transmitting the voice signal, and a selector for connecting either the communication port or the ear jack with the voice amplifier.
    Type: Application
    Filed: December 28, 2000
    Publication date: July 5, 2001
    Applicant: LG Electronics Inc.
    Inventors: Sang Yong Yi, Claude Dufresne, Scheigetz John, Cheuk Kun Lau, Chun Sing Li, Patrick Roy, Michael Boyd, Zhaoyin Wang
  • Patent number: 6174874
    Abstract: The invention encompasses the novel class of compounds represented by formula I which are inhibitors of the PTP-1B enzyme. The invention also encompasses pharmaceutical compositions and methods of treating or preventing PTP-1B mediated diseases.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: January 16, 2001
    Assignee: Merck Frosst Canada & Co.
    Inventors: Zhaoyin Wang, Claude Dufresne, Yves Leblanc, Chun Sing Li, Jacques Y. Gauthier, Cheuk K. Lau, Michel Therien, Patrick Roy
  • Patent number: 5952347
    Abstract: Compounds of Formula I: ##STR1## are antagonists of the actions of leukotrienes. These compounds are useful as anti-asthmatic, anti-allergic, anti-inflammatory, and cytoprotective agents. They are also useful in treating angina, cerebral spasm, glomerular nephritis, hepatitis, endotoxemia, uveitis, and allograft rejection.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: September 14, 1999
    Assignee: Merck & Co., Inc.
    Inventors: Byron H. Arison, Thomas A. Baillie, Suresh K. Balani, Claude Dufresne